From 754bbf7a25a8dda49b5d08ef0d0443bbf5af0e36 Mon Sep 17 00:00:00 2001 From: Craig Jennings Date: Sun, 7 Apr 2024 13:41:34 -0500 Subject: new repository --- devdocs/bash/shell-operation.html | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 devdocs/bash/shell-operation.html (limited to 'devdocs/bash/shell-operation.html') diff --git a/devdocs/bash/shell-operation.html b/devdocs/bash/shell-operation.html new file mode 100644 index 00000000..a59209f9 --- /dev/null +++ b/devdocs/bash/shell-operation.html @@ -0,0 +1,13 @@ +

Shell Operation

The following is a brief description of the shell’s operation when it reads and executes a command. Basically, the shell does the following:

  1. Reads its input from a file (see Shell Scripts), from a string supplied as an argument to the -c invocation option (see Invoking Bash), or from the user’s terminal.
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  2. Breaks the input into words and operators, obeying the quoting rules described in Quoting. These tokens are separated by metacharacters. Alias expansion is performed by this step (see Aliases).
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  3. Parses the tokens into simple and compound commands (see Shell Commands).
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  4. Performs the various shell expansions (see Shell Expansions), breaking the expanded tokens into lists of filenames (see Filename Expansion) and commands and arguments.
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  5. Performs any necessary redirections (see Redirections) and removes the redirection operators and their operands from the argument list.
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  6. Executes the command (see Executing Commands).
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  7. Optionally waits for the command to complete and collects its exit status (see Exit Status).
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+ Copyright © 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc.
Licensed under the GNU Free Documentation License.
+ https://www.gnu.org/software/bash/manual/html_node/Shell-Operation.html +

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